- United States21
- United States, Alabama, Jefferson County, Birmingham10
- United States, Georgia, Fulton County, Atlanta7
- China6
- Iran6
- United States, Texas, Harris County, Houston4
- Egypt3
- Israel3
- Soviet Union2
- Africa1
- Italy1
- United States, Alabama1
- United States, California, City and County of San Francisco, San Francisco1
- United States, Florida, Hillsborough County, Tampa1
- United States, Illinois, Cook County, Chicago1
- United States, North Carolina, Alamance County, Burlington1
- United States, North Carolina, Forsyth County, Winston-Salem1
- United States, North Carolina, Wake County, Raleigh1
- United States, Ohio, Cuyahoga County, Cleveland1
- United States, Pennsylvania, Philadelphia County, Philadelphia1
